OMX Nordic 40 (OMXN40)

The NASDAQ OMX Group, Inc. (NASDAQ:NDAQ) announces today the results of the
semi-annual review of the OMX Nordic 40 index, (NASDAQ OMX Stockholm: OMXN40),
which will become effective on December 21, 2009.

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The OMX Nordic 40 index is a market capitalization weighted stock index mapping 40 of the largest and the most liquid stocks on the virtual OMX Nordic Exchange. This Pan-reigonal index tracks stocks from Denmark, Finland, Sweden and Iceland. The OMXN40 is a market weighted price index primarily constructed for derivatives trading[1]. The base date for the index is December 28, 2001, with a base value of 1000[2].

Weighting and Calculations

The OMX Nordic indices are calculated on basis of a market adjusted cap formula devised by the four Nordic Exchanges. The index calculation is done on basis of their previous value from the previous period, similar to the DAX Indices on the Frankfurt Stock Exchange. Thus for a given company i and at time t:
[3]

Where:

It = Index level.

qi,t = Number of shares of company.

pi,t = Price in currency of a share.

ri,t = Foreign exchange rate of index currency to any given currency.

ji,t = accounts for any adjustment factors for the share price of stocks due to corporate actions.

Composition

Eligibility

To be selected for the Nordic 40, the stocks must satisfy the following criteria[4]:

All the stocks must be highly liquid and amenable to a free floated market adjusted cap.

All the stocks must have been listed on one of the Nordic Exchanges for atleast six months previously in Euro.

The 40 largest securities according to free float adjusted market cap are first included. If all of the 40 selected securities are among the top 45 most liquid securities they are all selected as index constituents. If one or more securities are not among the top 45 liquid companies, the securities will be replaced by the security that is closest to qualify.